
Notre Dame Cathedral in Paris has finally reopened, bringing joy not just to Parisians but to admirers worldwide. Its restoration following the devastating 2019 fire has been a remarkable testament to human ingenuity and dedication. During the process, a fascinating chapter of history unfolded beneath its ancient foundations, thanks to a French law that mandates archaeological exploration in areas impacted by restoration or development.
Excavation Unveils Layers of History
This law allows archaeologists to “detect and undertake the scientific study of archaeological remains (on land and underwater) that might otherwise be destroyed by land development work.” In Notre Dame’s case, these explorations uncovered an incredible array of artifacts and remains. Among the findings were 100 graves, over 1,000 fragments of statues, and crucial insights into the cathedral’s construction history.
The team, led by Christophe Besnier of the Institut National de Recherches Archéologiques Préventives (INRAP), unearthed fragments of limestone sculptures depicting men and saints, including the Savior. Many of these artifacts retained traces of their original pigments, offering a rare glimpse into the vibrant artistry of medieval Europe. Besnier believes even more treasures, possibly including fragments of a 13th-century jubé or rood screen, remain buried beneath the choir, although these areas were beyond the scope of the recent excavation.
Rediscovering the Rood Screen
One of the most significant discoveries was hundreds of fragments of the jubé, a marvel of Gothic architecture. The rood screen, a feature common in medieval churches, separated the choir and sanctuary from the nave, symbolically dividing the sacred from the secular. The term “rood,” derived from the Saxon word for cross, emphasizes its central placement at the transept. Decorated with intricate floral patterns, Gothic motifs, and reliefs depicting scenes from the Passion of Christ, the screen was once a masterpiece of pre-modern European sculpture.
Key recovered pieces illustrate pivotal events from the Last Supper to the Resurrection, showcasing the craftsmanship and devotion of the artisans who created it. The pigments still visible on some fragments highlight the screen’s original grandeur, where vibrant colors would have brought the sculptures to life.

Insights Into Medieval Construction Techniques
The excavation also shed light on the original construction of Notre Dame. Charred remains of wooden beams revealed that early builders used 100-year-old oak trees, hand-cut and meticulously prepared. These massive timbers, measuring 49 feet long, were transported via the Seine River to the island where the cathedral stands. Special notches in the beams suggest the use of intricate rope systems for assembly.
Heavy iron clamps, measuring 10 to 20 inches, were another groundbreaking find. Dating back to around 1160 CE, these clamps demonstrate Notre Dame’s pioneering use of iron as a building material in Gothic architecture. This innovation marked a significant departure from earlier construction techniques and underscored the forward-thinking design of the cathedral’s creators.
A Balance Between Preservation and Public Access
Despite the remarkable findings, there are no immediate plans to excavate the choir area further. The nation is eager to allow the public to once again experience the majesty of the cathedral without interruptions. President Emmanuel Macron prioritized reopening Notre Dame in time for the 2024 Olympics, driving the restoration effort under a tight deadline. The excavation itself operated under significant time constraints, balancing the urgent need for restoration with the delicate process of uncovering history.
For now, the uncovered artifacts will be studied and preserved, adding to our understanding of Notre Dame’s historical and cultural significance. The reopened cathedral stands not only as a beacon of resilience but also as a reminder of the intricate layers of history that lie beneath our feet, waiting to be rediscovered.
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